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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 3 |
| 5 | 8 |
| 6 | 19 |
| 7 | 41 |
| 8 | 85 |
| 9 | 167 |
| 10 | 319 |
| 11 | 588 |
| 12 | 1066 |
| 13 | 1880 |
| 14 | 3272 |
| 15 | 5588 |
| 16 | 9431 |
| 17 | 15686 |
| 18 | 25841 |
| 19 | 42070 |
| 20 | 67926 |
| 21 | 108634 |
| 22 | 172467 |
| 23 | 271643 |
| 24 | 425109 |
| 25 | 660756 |
| 26 | 1021170 |
| 27 | 1568905 |
| 28 | 2398059 |
| 29 | 3646437 |
| 30 | 5519025 |
| 31 | 8314623 |
| 32 | 12473538 |
| 33 | 18634748 |
| 34 | 27731820 |
| 35 | 41113453 |
| 36 | 60735830 |
| 37 | 89411503 |
| 38 | 131193675 |
[0,0,1,3,8,19,41,85,167,319,588,1066,1880,3272, 5588,9431,15686,25841,42070,67926,108634,172467, 271643,425109,660756,1021170,1568905,2398059, 3646437,5519025,8314623,12473538,18634748, 27731820,41113453,60735830,89411503,131193675] |